These days, coco coir is of a far higher quality than the products that were around a few years ago. Coco coir is derived from coconut shell fibre and is an entirely natural product, sometimes referred to as coco peat. It supports biological (bio) gardening and most coco peats already contain the friendly trichoderma fungi. Many use it as an alternative to soil. However, it drains much more freely than soil and can be used in many hydroponic systems. Use with a quality coco-specific feed and enjoy the best of both worlds!